| 摘要 |
A heat exchange flow passage 21 comprises a plurality of annular flow passages arranged in parallel to each other and also communicated to each other in the circumferential direction, a plurality of inflow ports and a plurality of outflow ports provided in the annular flow passage 24 at positions displaced from each other in the circumferential direction, and a plurality of communication pipes 25 each communicating the inflow port and the outflow port provided in different annular flow passages 24, 24. A fluid feed pipe 22 and a fluid discharge pipe 23 are communicated to this heat exchange flow passage 21 to form a heat exchanging apparatus.
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